I find that it's ability/aggressiveness where you'd need a higher din set binding. If you're hucking cliffs/hitting big jumps/ski very aggressively, even if you're light you might need a higher set regardless of your weight/height, but if you're set at 6 now, I'd say stay with the Look PX 10, it's a great binding super reliable, and if you didn't know this already, it's made by Rossy. Even if you progress up to a din set of 9, you're still going to be all right using this binding. I wouldn't ever suggest maxing out a binding and setting it to its highest din, but you can progress with this binding and it's going to last a long time because it's durable.